Did you just run into a download or a file on your computer that has been digitally signed by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION? If that's the case, please read on.
You will typically notice NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION certificate with the following steps:
Here's a screencap of a file that has been signed by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION and that the file has not been tampered with.
If you click the View Certificate button shown in the screencap above, you can view all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also see the address for NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION, such as the street name, city and country.
VeriSign Class 3 Code Signing 2004 CA and VeriSign Class 3 Code Signing 2010 CA has issued the NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/46 | IPv6RExUI.exe |
| 0/54 | acs.exe |
| 0/53 | StartUpTool_e.exe |
The detection percentage is based on the fact that I have collected 153 scan results for the NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION files. 0 of these scan results came up with some sort of detection. If you like, you can view the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: